Will the Core i5-14400F bottleneck the RX 9070?

No. At 1440p the RX 9070 is the limiting part, which is the normal state for a gaming PC. The Core i5-14400F has headroom to spare. This is a model estimate from performance indexes, not a measured FPS loss.

What power supply do I need for a Core i5-14400F and RX 9070?

Sustained gaming load is about 456 W using the RX 9070's measured draw. A 650 W unit is the safe choice.

Is this pair better at 1080p or 4K?

1080p: CPU-limited 8% (balanced). 1440p: GPU-limited 0% (balanced). 4K: GPU-limited 22% (GPU-bound (normal)).

Core i5-14400F + RX 9070: bottleneck check

Evenly matched at 1440p.

CPU GPU

Neither part waits on the other at 1440p. This is as balanced as a pairing gets.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	CPU	8%	balanced
1440p	GPU	0%	balanced
4K	GPU	22%	GPU-bound (normal)

This is the classic pattern: at 1080p the Core i5-14400F is the limit (8%), while at 4K the RX 9070 takes over (22% GPU-limited). If you play at 1080p on a high-refresh monitor, a faster CPU is the upgrade that matters; at 1440p or 4K this pair is already well matched.

Specifications

Intel Core i5-14400F
Cores / threads	10 / 16
Max boost	4.7 GHz
Socket	LGA1700
Maximum turbo power (MTP)	148 W Intel's published maximum sustained turbo power, above its base power; the PSU estimate uses it, so it errs high · Intel ARK
Released	2024
Gaming index	72 / 100
Multi-core index	60 / 100

AMD Radeon RX 9070
VRAM	16 GB
Board power	220 W
Released	2025
1080p index	58.3 / 100
1440p index	53 / 100
4K index	48.2 / 100

Power supply

The RX 9070 measured 233 W average while gaming (283 W highest 20 ms spike, TechPowerUp). With the Core i5-14400F at its maximum turbo power of 148 W and about 75 W for the rest of the system, the sustained load is about 456 W. A 650 W unit is the safe choice. Details on the RX 9070 PSU page or try other pairs in the PSU calculator.

Upgrade paths

CPUs that remove the bottleneck

LGA1700

Cards that use the Core i5-14400F fully

Best CPU for the RX 9070 Best GPU for the Core i5-14400F RX 9070 PSU requirements

Same CPU, other cards

All

Same card, other CPUs

All

Indexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.